Summary
Using histological and histochemical techniques, we have found a unique population of mast cells in the lymphatic sinuses of lymph nodes from different anatomical regions of the opossum. The lymphatic-sinus mast cells of the medullary sinuses were numerous, and could be easily distinguished from the connective-tissue mast cells of the dermis and lymph node capsule by their larger size and their enlarged cytoplasmic granules that were also more heterogeneous in shape and staining properties.
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Chiarini-Garcia, H., Machado, C.R.S. Mast cell types in the lymph nodes of the opossum Didelphis albiventris (Marsupialia, Didelphidae). Cell Tissue Res 268, 571–574 (1992). https://doi.org/10.1007/BF00319165
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DOI: https://doi.org/10.1007/BF00319165